Ballpoint pen



FIG. 1 is a perspective view of the ballpoint pen of the subjectinvention with the nib extended;

FIG. 2 is a front view of the ballpoint pen of the subject inventionwith the nib extended;

FIG. 3 is a rear view of the ballpoint pen of the subject invention withthe nib extended;

FIG. 4 is a right side view of the ballpoint pen of the subjectinvention with the nib extended;

FIG. 5 is a left side view of the ballpoint pen of the subject inventionwith the nib extended;

FIG. 6 is a top view of the ballpoint pen of the subject invention;

FIG. 7 is a bottom view of the ballpoint pen of the subject invention;and,

FIG. 8 is a perspective view of the ballpoint pen of the subjectinvention with the nib retracted.

The ornamental design for a ballpoint pen, as shown and described.